I have a 75 gallon lightly planted tank and have had issues with brown hair algae. I run my lights directly on the tank and do so for 12 hours. Clearly this is an amateur move and I need to correct this. While rethinking my plan, I wanted to upgrade my filtration and lighting and add CO2 to my tank.

I have a Neptune Systems controller so I have a lot of flexibility in which light I choose. Right now I am running a Coralife Freshwater Power Compact fixture with 4x65 Watt bulbs in it.

For substrate I have 2.5" of Eco-Complete.

My question is, how should I prioritize the upgrade?

- I was thinking of raising up the lights, running only two out of the four bulbs.

- Then add CO2 (more research needs to be done here, recommendations welcome).

- Then finally switch to LED lighting, trying to save some money on the power bill.

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